EP3299335A1 - Method and device for steam reforming - Google Patents

Method and device for steam reforming Download PDF

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Publication number
EP3299335A1
EP3299335A1 EP17001506.9A EP17001506A EP3299335A1 EP 3299335 A1 EP3299335 A1 EP 3299335A1 EP 17001506 A EP17001506 A EP 17001506A EP 3299335 A1 EP3299335 A1 EP 3299335A1
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Prior art keywords
steam
hydrocarbon
jet pump
gas
pressure
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EP17001506.9A
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German (de)
French (fr)
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Jarosch Maximilian
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Linde GmbH
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Linde GmbH
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    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
    • C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
    • C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
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    • C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
    • C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
    • C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
    • C01B3/388—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts the heat being generated by superheated steam
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    • B01J8/065—Feeding reactive fluids
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    • C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step
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Definitions

  • the invention relates to a method for producing a gas product comprising hydrogen and / or carbon monoxide, wherein a hydrocarbon feed formed from a hydrocarbon-containing feedstock is fed together with superheated steam to a steam reforming operation at elevated pressure to obtain a synthesis gas containing hydrogen and carbon monoxide, from the gas product is recovered.
  • the invention relates to a device for carrying out the method according to the invention.
  • Hydrocarbon-containing starting materials for example natural gas, liquefied petroleum gas or naphtha
  • hydrocarbon use for example, a steam reformer reformer tubes
  • a hydrogen-rich, carbon monoxide containing synthesis crude from the in subsequent process steps, a gas product comprising hydrogen and / or carbon monoxide, such as, for example, pure hydrogen, is obtained.
  • the energy required for the reforming reaction is usually provided via burners which discharge their hot flue gases into the furnace.
  • the flue gases transfer a portion of the heat contained in them on the reformer tubes before they are cooled, but still withdrawn hot through a flue, in which one of several Heat exchangers existing Abhitzesystem is arranged. Heat is further removed from the flue gases via the heat exchangers, and z. B. used for the preheating of the starting materials or for the production of process steam, so that they only have a temperature between 120 and 200 ° C, when they are finally discharged through a fireplace in the atmosphere.
  • Superheated steam is usually used as the process steam, for the production of which prior art boiler feed water is first pumped into a steam drum. From the steam drum preheated water flows through the action of gravity down to a arranged in the flue gas duct of the steam reformer first heat exchanger and is partially evaporated there against flue gas to be cooled. Due to its lower density, the liquid / vapor mixture formed in the first heat exchanger rises and returns to the steam drum, in which a separation into liquid water and saturated steam takes place, for example, with a pressure of about 48bar (a) and a temperature of 260 ° C is present. The saturated steam is passed on to a likewise in the flue gas duct of the steam reformer, but upstream of the first arranged second heat exchanger, can be deducted from the superheated steam as process steam.
  • the steam drum may be connected to a PGC as indicated (by English Process G as ooler C) the waste heat boiler, is evaporated in the boiler feed water against hot flowing off from the synthesis gas reformer tubes partially.
  • the steam drum represents a considerable cost factor, since it must be designed as a pressure vessel, which is expensive in design, manufacture and monitoring.
  • the required positioning of the steam drum above the flue gas duct of the steam reformer requires a stable framework construction, the cost of which is also attributable to the steam drum.
  • the hydrocarbon-containing starting material is often present at a pressure which is insufficient for direct supply to the steam reformer.
  • a mechanical compressor is used in the prior art to increase the pressure of the starting material.
  • Sulfur present in the hydrocarbon-containing starting material represents a poison for the catalyst used for steam reforming, which is why the starting material must be prepared by the separation of the sulfur.
  • the sulfur is hydrogenated to hydrogen sulfide, which is subsequently removed by adsorption.
  • hydrogen separated from the synthesis crude gas is usually recycled and mixed with the hydrocarbon-containing starting material upstream of the reactor used for the hydrogenation. If the starting material is at a higher pressure than the recirculated hydrogen, then the recirculated material flow must be compressed, which is also used in the prior art, a mechanical compressor.
  • the object of the present invention is to provide a method and a device of the generic type, by which the disadvantages of the prior art are overcome, so as to improve the efficiency of the steam reforming.
  • boiler feed water is supplied at a higher than its critical pressure heat to obtain supercritical water, of which subsequently at least a subset is used as a propellant in a steam jet pump, with the aid of the hydrocarbon feed and / or one of its Forming used substance is compressed.
  • the proposed method makes it possible to completely dispense with failure-prone, expensive and mostly redundantly designed machines for compressing the hydrocarbon feed and / or a substance used for its formation, which is, for example, recirculated hydrogen.
  • Steam jet pumps have been state of the art for many years and are known to the person skilled in the art. They have a relatively simple construction without moving parts and are robust, so that they can be used at significantly lower costs than the mechanical compressors used in the prior art.
  • the part of the supercritical water used as the driving medium is expanded either via a throttle element arranged upstream of the steam jet pump or in the drive nozzle of the steam jet pump to superheated steam, the pressure energy of which is converted into speed energy.
  • the steam jet pump is expediently designed and operated so that the superheated steam downstream of the motive nozzle has a static pressure which is lower than the suction pressure of the hydrocarbon feed or the substance used to form the hydrocarbon feed, which is therefore sucked in and out of themaschinedüse exiting steam jet can be accelerated.
  • the adjoining the motive nozzle inlet cone of the diffuser mix the steam and the sucked substances before they are decelerated in the diffuser again. Since the deceleration recovers pressure energy, the sucked substances leave the steam jet pump together with the superheated steam at a higher than their suction pressure.
  • the pressure, temperature and mass flow of the supercritical water used as blowing agent are selected so that in the compression of the hydrocarbon feed in the steam jet pump, a mixture is formed, which meets the requirements of steam reforming due to its composition and / or which has a pressure of a supply allowed to steam reforming without further compaction.
  • a first part of the boiler feed water can be heated against a hot flue gas, which is supplied from the firebox of the steam reformer used for steam reforming, where it already released part of its sensible heat for the running in the reformer tubes arranged there endothermic reforming reaction has, while a second part of the boiler feed water is heated against hot from the steam reformer effluent synthesis crude gas.
  • the entire boiler feed water is heated in heat exchange with hot flowing out of the steam reformer flue gas.
  • the heat of the hot synthesis raw gas is usefully used to preheat the combustion air for burners used in the steam reformer and / or the substance mixture obtained during the compression in the steam jet pump overheat before it is fed to steam reforming.
  • Overheating of the material mixture obtained in the steam jet pump is alternatively or additionally also possible against a hot flue gas, which is preferably a flue gas flowing out of the combustion chamber of the steam reformer used for steam reforming, which is subsequently used for the generation of the supercritical water.
  • a hot flue gas which is preferably a flue gas flowing out of the combustion chamber of the steam reformer used for steam reforming, which is subsequently used for the generation of the supercritical water.
  • a variant of the method according to the invention provides for the use of all the available amount of heat for generating supercritical water and for exporting the part not required for the provision of process steam in order to generate electricity and / or for heating purposes and / or to carry it out chemical reactions and / or as an extractant and / or for the destruction of toxic substances.
  • a further embodiment of the method according to the invention provides that the part of the supercritical water intended for export is heated higher than the part intended for the production of process steam, for which preference flue gas from the furnace of the steam reformer or hot synthesis gas is used.
  • the process according to the invention can be used to obtain a gas product comprising carbon monoxide and / or hydrogen by steam reforming from a large number of starting materials comprising hydrocarbons, such as natural gas, liquid gas or naphtha.
  • the invention relates to a device for producing a gas product comprising hydrogen and / or carbon monoxide from a hydrocarbon feed, which is formed from a hydrocarbon-containing starting material, with a steam reformer and a system for process steam generation from boiler feed water.
  • the system for process steam generation operable in the supercritical range continuous flow boiler the superheater is connected to a steam jet pump so that superheater generated in the superheater as blowing agent in the steam jet pump for compressing the hydrocarbon feed and / or one of its Forming used substance can be used.
  • the steam reformer preferably has a burner-fired combustion chamber with reformer tubes arranged therein and a flue gas duct via which cooled, but still hot flue gases can be withdrawn from the furnace.
  • the forced-circulation boiler is arranged in the flue gas duct of the steam reformer, so that the heat of the flue gases withdrawn from the combustion chamber can be used to produce the supercritical water.
  • FIG. 1 schematically illustrated embodiment.
  • the FIG. 1 shows a plant in which from a hydrocarbon-containing starting material by steam reforming pure hydrogen is obtained as a gas product.
  • boiler feed water 7 is then brought by means of the boiler feed water pump P to a pressure of up to 20 bar above its critical pressure and fed via line 8 in the flue gas duct A of the steam reformer D arranged heat exchanger E1, where in indirect heat exchange with hot Flue gas 9 supercritical water 10 is formed.
  • a part 11 of the supercritical water 10 is exported and can be used, for example, to generate electricity in a steam turbine (not shown).
  • the supercritical water 10 is thereby preferably produced at a pressure and a temperature which make it possible to supply the superheated steam 13 with the total amount of process steam required for the steam reforming of the steam jet pump P, so that the stream 14 leaving the steam jet pump V does not change further Composition and only after overheating against hot flue gas 15 in the upstream of the first E1 arranged second heat exchanger E2 can be introduced as a superheated insert 16 in the reformer tubes R of the steam reformer D.
  • a synthesis gas 18 largely consisting of hydrogen and carbon monoxide is produced in the purification device G by the separation of water and carbon dioxide in particular, the hydrogen chloride in the pressure swing adsorber W and a residual gas consisting predominantly of carbon monoxide 20 is disassembled. While the residual gas 20 is burned in the furnace F of the steam reformer D to provide energy for the reforming reaction, the greater part of the pure hydrogen 19 than Gas product 21 delivered and the smaller part 4 returned before the treatment device B in the second partial stream 3 of the starting material 1.

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  • Hydrogen, Water And Hydrids (AREA)

Abstract

Die Erfindung betrifft ein Verfahren sowie eine Vorrichtung zur Erzeugung eines Wasserstoff und/oder Kohlenmonoxid umfassenden Gasproduktes (21), wobei ein aus einem Kohlenwasserstoffe enthaltenden Ausgangsstoff (1) gebildeter Kohlenwasserstoffeinsatz (5) gemeinsam mit überhitztem Dampf (13) einer bei erhöhtem Druck ablaufenden Dampfreformierung (D) zugeführt wird, um ein Wasserstoff und Kohlenmonoxid enthaltendes Syntheserohgas (17) zu erhalten, aus dem das Gasprodukt (21) gewonnen wird. Kennzeichnend hierbei ist, dass Kesselspeisewasser (8) bei einem höheren als seinem kritischen Druck Wärme zugeführt wird (E1), um überkritisches Wasser (10) zu erhalten, von dem nachfolgend zumindest eine Teilmenge (12) als Treibmedium in einer Dampfstrahlpumpe (V) eingesetzt wird, mit deren Hilfe der Kohlenwasserstoffeinsatz (5) und/oder ein zu dessen Bildung eingesetzter Stoff verdichtet wird.The invention relates to a method and a device for producing a gas product comprising hydrogen and / or carbon monoxide (21), wherein a hydrocarbon feed (5) formed from a hydrocarbon-containing starting material (5) together with superheated steam (13) is subjected to steam reforming at elevated pressure (D) is supplied to obtain a hydrogen and carbon monoxide containing synthesis gas (17) from which the gas product (21) is recovered. Characteristic here is that boiler feed water (8) at a higher than its critical pressure heat is supplied (E1) to obtain supercritical water (10), of which subsequently at least a subset (12) used as a driving medium in a steam jet pump (V) is used, by means of which the hydrocarbon feed (5) and / or a substance used for its formation is compressed.

Description

Die Erfindung betrifft ein Verfahren zur Erzeugung eines Wasserstoff und/oder Kohlenmonoxid umfassenden Gasproduktes, wobei ein aus einem Kohlenwasserstoffe enthaltenden Ausgangsstoff gebildeter Kohlenwasserstoffeinsatz gemeinsam mit überhitztem Dampf einer bei erhöhtem Druck ablaufenden Dampfreformierung zugeführt wird, um ein Wasserstoff und Kohlenmonoxid enthaltendes Syntheserohgas zu erhalten, aus dem das Gasprodukt gewonnen wird.The invention relates to a method for producing a gas product comprising hydrogen and / or carbon monoxide, wherein a hydrocarbon feed formed from a hydrocarbon-containing feedstock is fed together with superheated steam to a steam reforming operation at elevated pressure to obtain a synthesis gas containing hydrogen and carbon monoxide, from the gas product is recovered.

Weiterhin betrifft die Erfindung eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens.Furthermore, the invention relates to a device for carrying out the method according to the invention.

Die Dampfreformierung ist das am weitesten verbreitete Verfahren zur industriellen Erzeugung von wasserstoffreichem Synthesegas aus leichten Kohlenwasserstoffen. Hierbei werden Kohlenwasserstoffe enthaltende Ausgangsstoffe (beispielsweise Erdgas, Flüssiggas oder Naphtha) durch Abtrennung unerwünschter Stoffe wie Schwefel sowie evtl. durch Zumischung von innerhalb des Prozesses zurückgeführter Stoffströme zu einem Einsatz (Kohlenwasserstoffeinsatz) aufbereitet, der gemeinsam mit Prozessdampf durch im Feuerraum eines Dampfreformers angeordnete Reformerrohre geleitet wird. In den Reformerrohren, deren innere Oberflächen katalytisch aktiv sind oder die ganz oder zumindest teilweise im Bereich des Feuerraums mit einer Schüttung aus einem geeigneten Katalysatormaterial oder einer katalytisch aktiven strukturierten Packung gefüllt sind, entsteht in einer endothermen Reformierungsreaktion ein wasserstoffreiches, Kohlenmonoxid enthaltendes Syntheserohgas, aus dem in nachfolgenden Verfahrensschritten ein Wasserstoff und/oder Kohlenmonoxid umfassendes Gasprodukt wie beispielsweise Reinwasserstoff erhalten wird.Steam reforming is the most widely used process for the industrial production of hydrogen rich synthesis gas from light hydrocarbons. In this case, hydrocarbon-containing starting materials (for example natural gas, liquefied petroleum gas or naphtha) by separation of undesirable substances such as sulfur and possibly by admixing within the process recycled material flows to an application (hydrocarbon use) processed, which passed together with process steam through arranged in the furnace of a steam reformer reformer tubes becomes. In the reformer tubes whose inner surfaces are catalytically active or which are completely or at least partially filled in the region of the furnace with a bed of a suitable catalyst material or a catalytically active structured packing, resulting in an endothermic reforming reaction, a hydrogen-rich, carbon monoxide containing synthesis crude, from the in subsequent process steps, a gas product comprising hydrogen and / or carbon monoxide, such as, for example, pure hydrogen, is obtained.

Die für die Reformierungsreaktion benötigte Energie wird gewöhnlich über Brenner bereitgestellt, die ihre heißen Rauchgase in den Feuerraum entlassen. Durch Strahlung und Konvektion übertragen die Rauchgase einen Teil der in ihnen enthaltenen Wärme auf die Reformerrohre, bevor sie zwar abgekühlt, jedoch immer noch heiß über einen Rauchgaskanal abgezogen werden, in dem ein aus mehreren Wärmetauschern bestehendes Abhitzesystem angeordnet ist. Über die Wärmetauscher wird den Rauchgasen weiter Wärme entzogen und z. B. für die Vorwärmung der Ausgangsstoffe oder zur Erzeugung von Prozessdampf genutzt, so dass sie lediglich eine Temperatur zwischen 120 und 200°C aufweisen, wenn sie schließlich über einen Kamin in die Atmosphäre entlassen werden.The energy required for the reforming reaction is usually provided via burners which discharge their hot flue gases into the furnace. By radiation and convection, the flue gases transfer a portion of the heat contained in them on the reformer tubes before they are cooled, but still withdrawn hot through a flue, in which one of several Heat exchangers existing Abhitzesystem is arranged. Heat is further removed from the flue gases via the heat exchangers, and z. B. used for the preheating of the starting materials or for the production of process steam, so that they only have a temperature between 120 and 200 ° C, when they are finally discharged through a fireplace in the atmosphere.

Als Prozessdampf wird üblicherweise überhitzter Dampf eingesetzt, zu dessen Erzeugung nach dem Stand der Technik zunächst Kesselspeisewasser in eine Dampftrommel gepumpt wird. Aus der Dampftrommel strömt vorgewärmtes Wasser durch Wirkung der Schwerkraft nach unten zu einem im Rauchgaskanal des Dampfreformers angeordneten ersten Wärmetauscher und wird dort gegen abzukühlendes Rauchgas teilweise verdampft. Aufgrund seiner geringeren Dichte steigt das im ersten Wärmetauscher gebildete Flüssigkeits/Dampf-Gemisch nach oben und gelangt zurück in die Dampftrommel, in der eine Trennung in flüssiges Wasser und Sattdampf erfolgt, der beispielsweise mit einem Druck von ca. 48bar(a) und einer Temperatur von 260°C vorliegt. Der Sattdampf wird zu einem ebenfalls im Rauchgaskanal des Dampfreformers, jedoch stromaufwärts des ersten angeordneten zweiten Wärmetauscher weitergeleitet, aus dem überhitzter Dampf als Prozessdampf abgezogen werden kann.Superheated steam is usually used as the process steam, for the production of which prior art boiler feed water is first pumped into a steam drum. From the steam drum preheated water flows through the action of gravity down to a arranged in the flue gas duct of the steam reformer first heat exchanger and is partially evaporated there against flue gas to be cooled. Due to its lower density, the liquid / vapor mixture formed in the first heat exchanger rises and returns to the steam drum, in which a separation into liquid water and saturated steam takes place, for example, with a pressure of about 48bar (a) and a temperature of 260 ° C is present. The saturated steam is passed on to a likewise in the flue gas duct of the steam reformer, but upstream of the first arranged second heat exchanger, can be deducted from the superheated steam as process steam.

Die Dampftrommel kann auch mit einem als PGC (von englisch Process Gas Cooler) bezeichneten Abhitzekessel verbunden sein, in dem Kesselspeisewasser gegen heiß aus den Reformerrohren abströmendes Syntheserohgas teilweise verdampft wird.The steam drum may be connected to a PGC as indicated (by English Process G as ooler C) the waste heat boiler, is evaporated in the boiler feed water against hot flowing off from the synthesis gas reformer tubes partially.

Die Dampftrommel stellt einen beträchtlichen Kostenfaktor dar, da sie als Druckbehälter ausgeführt sein muss, der aufwendig in Auslegung, Herstellung und Überwachung ist. Die erforderliche Positionierung der Dampftrommel oberhalb des Rauchgaskanals des Dampfreformers macht eine stabile Gerüstkonstruktion erforderlich, deren Kosten ebenfalls der Dampftrommel zuzurechnen sind.The steam drum represents a considerable cost factor, since it must be designed as a pressure vessel, which is expensive in design, manufacture and monitoring. The required positioning of the steam drum above the flue gas duct of the steam reformer requires a stable framework construction, the cost of which is also attributable to the steam drum.

Der Kohlenwasserstoffe enthaltende Ausgangsstoff liegt häufig mit einem Druck vor, der für eine direkte Zuführung zum Dampfreformer nicht ausreicht. In einem solchen Fall wird nach dem Stand der Technik ein mechanischer Kompressor eingesetzt, um den Druck des Ausgangsstoffes anzuheben.The hydrocarbon-containing starting material is often present at a pressure which is insufficient for direct supply to the steam reformer. In such a case, a mechanical compressor is used in the prior art to increase the pressure of the starting material.

Im Kohlenwasserstoffe enthaltenden Ausgangsstoff vorliegender Schwefel stellt für den zur Dampfreformierung eingesetzten Katalysator ein Gift dar, weshalb der Ausgangsstoff durch die Abtrennung des Schwefels aufbereitet werden muss. Hierzu wird der Schwefel zu Schwefelwasserstoff hydriert, der nachfolgend adsorptiv entfernt wird. Für die Hydrierung wird in der Regel aus dem Syntheserohgas abgetrennter Wasserstoff zurückgeführt und dem Kohlenwasserstoffe enthaltenden Ausgangsstoff stromaufwärts des für die Hydrierung eingesetzten Reaktors zugemischt. Liegt der Ausgangsstoff bei einem höheren Druck als der zurückgeführte Wasserstoff vor, so muss der rückgeführte Stoffstrom verdichtet werden, wozu nach dem Stand der Technik ebenfalls ein mechanischer Kompressor eingesetzt wird.Sulfur present in the hydrocarbon-containing starting material represents a poison for the catalyst used for steam reforming, which is why the starting material must be prepared by the separation of the sulfur. For this purpose, the sulfur is hydrogenated to hydrogen sulfide, which is subsequently removed by adsorption. For the hydrogenation, hydrogen separated from the synthesis crude gas is usually recycled and mixed with the hydrocarbon-containing starting material upstream of the reactor used for the hydrogenation. If the starting material is at a higher pressure than the recirculated hydrogen, then the recirculated material flow must be compressed, which is also used in the prior art, a mechanical compressor.

Mechanische Kompressoren sind teuer in Anschaffung und Betrieb. Da sie darüber hinaus auch eine vergleichsweise hohe Ausfallwahrscheinlichkeit aufweisen und daher redundant ausgeführt sind, haben sie einen deutlich negativen Einfluss auf die Wirtschaftlichkeit einer Dampfreformierung.Mechanical compressors are expensive to buy and operate. In addition, since they also have a comparatively high probability of failure and are therefore redundant, they have a clearly negative influence on the efficiency of steam reforming.

Aufgabe der vorliegenden Erfindung ist es, ein Verfahren sowie eine Vorrichtung der gattungsgemäßen Art anzugeben, durch welche die Nachteile des Standes der Technik überwunden werden, um so die Wirtschaftlichkeit der Dampfreformierung zu verbessern.The object of the present invention is to provide a method and a device of the generic type, by which the disadvantages of the prior art are overcome, so as to improve the efficiency of the steam reforming.

Diese Aufgabe wird dadurch gelöst, dass Kesselspeisewasser bei einem höheren als seinem kritischen Druck Wärme zugeführt wird, um überkritisches Wasser zu erhalten, von dem nachfolgend zumindest eine Teilmenge als Treibmedium in einer Dampfstrahlpumpe eingesetzt wird, mit deren Hilfe der Kohlenwasserstoffeinsatz und/oder ein zu dessen Bildung eingesetzter Stoff verdichtet wird.This object is achieved in that boiler feed water is supplied at a higher than its critical pressure heat to obtain supercritical water, of which subsequently at least a subset is used as a propellant in a steam jet pump, with the aid of the hydrocarbon feed and / or one of its Forming used substance is compressed.

Durch das vorgeschlagene Verfahren ist es möglich, zur Verdichtung des Kohlenwasserstoffeinsatzes und/oder eines zu dessen Bildung eingesetzten Stoffes, bei dem es sich beispielsweise um zurückgeführten Wasserstoff handelt, völlig auf störanfällige, teure und zumeist redundant ausgeführte Maschinen zu verzichten. Dampfstrahlpumpen sind seit vielen Jahren Stand der Technik und dem Fachmann bekannt. Sie weisen einen relativ einfachen Aufbau ohne bewegliche Teile auf und sind robust, so dass sie zu deutlich geringeren Kosten eingesetzt werden können, als die nach dem Stand der Technik verwendeten mechanischen Kompressoren.The proposed method makes it possible to completely dispense with failure-prone, expensive and mostly redundantly designed machines for compressing the hydrocarbon feed and / or a substance used for its formation, which is, for example, recirculated hydrogen. Steam jet pumps have been state of the art for many years and are known to the person skilled in the art. They have a relatively simple construction without moving parts and are robust, so that they can be used at significantly lower costs than the mechanical compressors used in the prior art.

Der als Treibmedium eingesetzte Teil des überkritischen Wassers wird entweder über ein stromaufwärts der Dampfstrahlpumpe angeordnetes Drosselorgan oder in der Treibdüse der Dampfstrahlpumpe zu überhitztem Dampf entspannt, dessen Druckenergie in Geschwindigkeitsenergie umgewandelt wird. Die Dampfstrahlpumpe ist zweckmäßigerweise so ausgelegt und wird so betrieben, dass der überhitzte Dampf stromabwärts der Treibdüse einen statischen Druck aufweist, der geringer ist, als der Ansaugdruck des Kohlenwasserstoffeinsatzes bzw. des zur Bildung des Kohlenwasserstoffeinsatzes eingesetzten Stoffs, die daher angesaugt und durch den aus der Treibdüse austretenden Dampfstrahl beschleunigt werden. In dem sich an die Treibdüse anschließenden Einlaufkonus des Diffusors mischen sich der Dampf und die angesaugten Stoffe, bevor sie im Diffusor wieder abgebremst werden. Da durch die Abbremsung Druckenergie zurückgewonnen wird, verlassen die angesaugten Stoffe die Dampfstrahlpumpe zusammen mit dem überhitzten Dampf mit einem höheren als ihrem Ansaugdruck.The part of the supercritical water used as the driving medium is expanded either via a throttle element arranged upstream of the steam jet pump or in the drive nozzle of the steam jet pump to superheated steam, the pressure energy of which is converted into speed energy. The steam jet pump is expediently designed and operated so that the superheated steam downstream of the motive nozzle has a static pressure which is lower than the suction pressure of the hydrocarbon feed or the substance used to form the hydrocarbon feed, which is therefore sucked in and out of the Treibdüse exiting steam jet can be accelerated. In the adjoining the motive nozzle inlet cone of the diffuser mix the steam and the sucked substances before they are decelerated in the diffuser again. Since the deceleration recovers pressure energy, the sucked substances leave the steam jet pump together with the superheated steam at a higher than their suction pressure.

Vorzugsweise werden Druck, Temperatur und Massenstrom des als Treibmittel eingesetzten überkritischen Wassers so gewählt, dass bei der Verdichtung des Kohlenwasserstoffeinsatzes in der Dampfstrahlpumpe ein Stoffgemisch gebildet wird, das den Anforderungen der Dampfreformierung aufgrund seiner Zusammensetzung genügt und/oder das einen Druck aufweist, der eine Zuführung zur Dampfreformierung ohne weitere Verdichtung erlaubt.Preferably, the pressure, temperature and mass flow of the supercritical water used as blowing agent are selected so that in the compression of the hydrocarbon feed in the steam jet pump, a mixture is formed, which meets the requirements of steam reforming due to its composition and / or which has a pressure of a supply allowed to steam reforming without further compaction.

Zur Erzeugung des überkritischen Wassers kann ein erster Teil des Kesselspeisewassers gegen ein heißes Rauchgas aufgeheizt werden, das etwa aus dem Feuerraum des zur Dampfreformierung eingesetzten Dampfreformers zugeführt wird, wo es bereits einen Teil seiner fühlbaren Wärme für die in den dort angeordneten Reformerrohren ablaufende endotherme Reformierungsreaktion abgegeben hat, während ein zweiter Teil des Kesselspeisewassers gegen heiß aus dem Dampfreformer abströmendes Syntheserohgas aufgeheizt wird. Vorzugsweise wird jedoch das gesamte Kesselspeisewasser im Wärmetausch mit heiß aus dem Dampfreformer abströmendem Rauchgas aufgeheizt. In diesem Fall wird sinnvollerweise die Wärme des heißen Syntheserohgases dazu verwendet, um die Verbrennungsluft für im Dampfreformer eingesetzte Brenner vorzuwärmen und/oder das bei der Verdichtung in der Dampfstrahlpumpe erhaltene Stoffgemisch zu überhitzen, ehe es der Dampfreformierung zugeführt wird. Eine Überhitzung des in der Dampfstrahlpumpe erhaltenen Stoffgemisches ist alternativ oder zusätzlich auch gegen ein heißes Rauchgas möglich, bei dem es sich bevorzugt um ein aus dem Feuerraum des zur Dampfreformierung eingesetzten Dampfreformers abströmendes Rauchgas handelt, das nachfolgend für die Erzeugung des überkritischen Wassers verwendet wird.To generate the supercritical water, a first part of the boiler feed water can be heated against a hot flue gas, which is supplied from the firebox of the steam reformer used for steam reforming, where it already released part of its sensible heat for the running in the reformer tubes arranged there endothermic reforming reaction has, while a second part of the boiler feed water is heated against hot from the steam reformer effluent synthesis crude gas. Preferably, however, the entire boiler feed water is heated in heat exchange with hot flowing out of the steam reformer flue gas. In this case, the heat of the hot synthesis raw gas is usefully used to preheat the combustion air for burners used in the steam reformer and / or the substance mixture obtained during the compression in the steam jet pump overheat before it is fed to steam reforming. Overheating of the material mixture obtained in the steam jet pump is alternatively or additionally also possible against a hot flue gas, which is preferably a flue gas flowing out of the combustion chamber of the steam reformer used for steam reforming, which is subsequently used for the generation of the supercritical water.

Die für die Erzeugung des überkritischen Wassers eingesetzten Anlagenkomponenten verursachen vergleichsweise hohe Kosten, da sie aus hochlegierten Spezialstählen gefertigt sein müssen, um den im Betrieb auftretenden staken Beanspruchungen zu genügen, die insbesondere mit dem maximalen Druck des überkritischen Wassers zunehmen. Um die Kosten der Dampfreformierung zu begrenzen, wird vorgeschlagen, das überkritische Wasser mit einem Druck zu erzeugen, der nicht mehr als 20 bar höher als der bei ca. 220bar(a) liegende kritische Druck des Kesselspeisewassers ist.The system components used for the production of supercritical water cause comparatively high costs, since they must be made of high-alloy special steels to meet the occurring during operation stak stresses that increase in particular with the maximum pressure of the supercritical water. To limit the cost of steam reforming, it is proposed to produce the supercritical water at a pressure not more than 20 bar higher than the boiler feed water critical pressure at about 220 bar (a).

Unter Umständen kann für die Erzeugung des überkritischen Wassers mehr Wärme auf einem geeigneten Temperaturniveau zur Verfügung stehen, als für die Herstellung des überhitzten, als Prozessdampf eingesetzten Dampfes benötigt wird. In diesem Fall sieht eine Variante des erfindungsgemäßen Verfahrens vor, die gesamte zur Verfügung stehende Wärmemenge zur Erzeugung von überkritischem Wasser einzusetzen und den nicht für die Bereitstellung von Prozessdampf benötigten Teil zu exportieren, um ihn zur Stromerzeugung und/oder zu Heizzwecken und/oder zur Durchführung chemischer Reaktionen und/oder als Extraktionsmittel und/oder zur Vernichtung toxischer Stoffe zu verwenden. Eine weitere Ausgestaltung des erfindungsgemäßen Verfahrens sieht vor, dass der für den Export bestimmte Teil des überkritischen Wassers höher als der für die Prozessdampfgewinnung vorgesehene Teil aufgeheizt wird, wozu bevorzugt Rauchgas aus dem Feuerraum des Dampfreformers oder heißes Syntheserohgas eingesetzt wird.Under certain circumstances, more heat can be available at a suitable temperature level for the production of the supercritical water than is needed for the production of the superheated steam used as process steam. In this case, a variant of the method according to the invention provides for the use of all the available amount of heat for generating supercritical water and for exporting the part not required for the provision of process steam in order to generate electricity and / or for heating purposes and / or to carry it out chemical reactions and / or as an extractant and / or for the destruction of toxic substances. A further embodiment of the method according to the invention provides that the part of the supercritical water intended for export is heated higher than the part intended for the production of process steam, for which preference flue gas from the furnace of the steam reformer or hot synthesis gas is used.

Das erfindungsgemäße Verfahren kann dazu verwendet werden, um aus einer Vielzahl von Kohlenwasserstoffe enthaltenden Ausgangsstoffen wie Erdgas, Flüssiggas oder Naphtha ein Kohlenmonoxid und/oder Wasserstoff umfassendes Gasprodukt durch Dampfreformierung zu erhalten.The process according to the invention can be used to obtain a gas product comprising carbon monoxide and / or hydrogen by steam reforming from a large number of starting materials comprising hydrocarbons, such as natural gas, liquid gas or naphtha.

Weiterhin betrifft die Erfindung eine Vorrichtung zur Erzeugung eines Wasserstoff und/oder Kohlenmonoxid umfassenden Gasproduktes aus einem Kohlenwasserstoffeinsatz, der aus einem Kohlenwasserstoffe enthaltenden Ausgangsstoff gebildet wird, mit einem Dampfreformer sowie einem System zur Prozessdampferzeugung aus Kesselspeisewasser.Furthermore, the invention relates to a device for producing a gas product comprising hydrogen and / or carbon monoxide from a hydrocarbon feed, which is formed from a hydrocarbon-containing starting material, with a steam reformer and a system for process steam generation from boiler feed water.

Die gestellte Aufgabe wird dadurch gelöst, dass das System zur Prozessdampferzeugung einen im überkritischen Bereich betreibbaren Zwangsdurchlaufkessel umfasst, dessen Überhitzer mit einer Dampfstrahlpumpe verbunden ist, so dass im Überhitzer erzeugbares überkritisches Wasser als Treibmittel in der Dampfstrahlpumpe zur Verdichtung des Kohlenwasserstoffeinsatzes und/oder eines zu dessen Bildung eingesetzten Stoffs verwendet werden kann.The object is achieved in that the system for process steam generation operable in the supercritical range continuous flow boiler, the superheater is connected to a steam jet pump so that superheater generated in the superheater as blowing agent in the steam jet pump for compressing the hydrocarbon feed and / or one of its Forming used substance can be used.

Bevorzugt weist der Dampfreformer einen brennerbefeuerten Feuerraum mit darin angeordneten Reformerrohren sowie einen Rauchgaskanal auf, über den abgekühlte, jedoch immer noch heiße Rauchgase aus dem Feuerraum abgezogen werden können. Zweckmäßigerweise ist der Zwangsdurchlaufkessel im Rauchgaskanal des Dampfreformers angeordnet, so dass die Wärme der aus dem Feuerraum abgezogenen Rauchgase zur Erzeugung des überkritischen Wassers nutzbar ist.The steam reformer preferably has a burner-fired combustion chamber with reformer tubes arranged therein and a flue gas duct via which cooled, but still hot flue gases can be withdrawn from the furnace. Conveniently, the forced-circulation boiler is arranged in the flue gas duct of the steam reformer, so that the heat of the flue gases withdrawn from the combustion chamber can be used to produce the supercritical water.

Im Folgenden soll die Erfindung anhand eines in der Figur 1 schematisch dargestellten Ausführungsbeispiels näher erläutert werden.In the following, the invention is based on a in the FIG. 1 schematically illustrated embodiment.

Die Figur 1 zeigt eine Anlage, in der aus einem Kohlenwasserstoffe enthaltenden Ausgangsstoff durch Dampfreformierung Reinwasserstoff als Gasprodukt gewonnen wird.The FIG. 1 shows a plant in which from a hydrocarbon-containing starting material by steam reforming pure hydrogen is obtained as a gas product.

Ein Kohlenwasserstoffe enthaltender Ausgangsstoff 1, bei dem es sich beispielsweise um Erdgas, verdampftes Flüssiggas oder Naphtha handelt, wird in einen ersten 2 und einen zweiten Teilstrom 3 getrennt. Während der erste Teilstrom 2 als Brennstoff dem Dampfreformer D zur Beheizung des Feuerraums F zugeführt wird, wird der zweite Teilstrom 3 mit zurückgeführtem Wasserstoff 4 gemischt und in die Behandlungseinrichtung B eingeleitet, um Stoffe wie Schwefelverbindungen abzutrennen, die in den stromabwärts gelegenen Anlagenteilen zu Störungen führen würden, und einen Kohlenwasserstoffeinsatz 5 für den Dampfreformer D zu liefern. Da der Druck des Kohlenwasserstoffeinsatzes 5 für eine direkte Einleitung in den bei ca. 20-30bar(a) betriebenen Dampfreformer D zu gering ist, wird er zur Druckerhöhung der Dampfstrahlpumpe V zugeführt.A hydrocarbon-containing starting material 1, which is, for example, natural gas, vaporized liquid gas or naphtha, is separated into a first 2 and a second partial stream 3. While the first partial flow 2 is supplied as fuel to the steam reformer D for heating the combustion chamber F, the second partial flow 3 is mixed with recirculated hydrogen 4 and introduced into the treatment device B to separate substances such as sulfur compounds, which lead to disturbances in the downstream parts of the plant and to provide a hydrocarbon feed 5 for the steam reformer D. There the pressure of the hydrocarbon feed 5 is too low for direct introduction into the steam reformer D operated at about 20-30 bar (a), it is fed to the pressure increase of the steam jet pump V.

Zur Erzeugung von Prozessdampf wird entmineralisiertes Wasser 6 in die Aufbereitungseinrichtung C geleitet, um entgast und zu Kesselspeisewasser 7 aufbereitet zu werden. Das unter leichtem Überdruck stehende Kesselspeisewasser 7 wird anschließend mit Hilfe der Kesselspeisewasserpumpe P auf einen um bis zu 20 bar über seinem kritischen Druck liegenden Druck gebracht und über Leitung 8 dem im Rauchgaskanal A des Dampfreformers D angeordneten Wärmetauscher E1 zugeführt, wo in indirektem Wärmetausch mit heißem Rauchgas 9 überkritisches Wasser 10 entsteht. Ein Teil 11 des überkritischen Wassers 10 wird exportiert und kann beispielsweise zur Stromerzeugung in einer Dampfturbine (nicht dargestellt) genutzt werden. Der Rest 12 des überkritischen Wassers 10 wird dagegen über das Drosselorgan a entspannt, wobei überhitzter Dampf 13 entsteht, der in der Dampfstrahlpumpe V als Treibmedium eingesetzt wird, um den Kohlenwasserstoffeinsatz 5 auf den für die Dampfreformierung erforderlichen Druck zu bringen und ihn gleichzeitig mit dem als Prozessdampf dienenden Treibmedium intensiv zu vermischen. Das überkritische Wasser 10 wird dabei vorzugsweise mit einem Druck und einer Temperatur erzeugt, die es ermöglichen, den überhitzten Dampf 13 mit der gesamten für die Dampfreformierung benötigten Prozessdampfmenge der Dampfstrahlpumpe P zuzuführen, so dass der die Dampfstrahlpumpe V verlassende Stoffstrom 14 ohne eine weitere Änderung seiner Zusammensetzung und lediglich nach Überhitzung gegen heißes Rauchgas 15 in dem stromaufwärts des ersten E1 angeordneten zweiten Wärmetauscher E2 als überhitzter Einsatz 16 in die Reformerrohre R des Dampfreformers D eingeleitet werden kann.To generate process steam demineralized water 6 is passed into the treatment device C to be degassed and processed to boiler feed water 7. The standing under slight overpressure boiler feed water 7 is then brought by means of the boiler feed water pump P to a pressure of up to 20 bar above its critical pressure and fed via line 8 in the flue gas duct A of the steam reformer D arranged heat exchanger E1, where in indirect heat exchange with hot Flue gas 9 supercritical water 10 is formed. A part 11 of the supercritical water 10 is exported and can be used, for example, to generate electricity in a steam turbine (not shown). The remainder 12 of the supercritical water 10, however, relaxes on the throttle body a, wherein superheated steam 13 is formed, which is used in the steam jet pump V as the driving medium to bring the hydrocarbon feed 5 to the pressure required for steam reforming and at the same time as with Intensive mixing of process steam serving propellant. The supercritical water 10 is thereby preferably produced at a pressure and a temperature which make it possible to supply the superheated steam 13 with the total amount of process steam required for the steam reforming of the steam jet pump P, so that the stream 14 leaving the steam jet pump V does not change further Composition and only after overheating against hot flue gas 15 in the upstream of the first E1 arranged second heat exchanger E2 can be introduced as a superheated insert 16 in the reformer tubes R of the steam reformer D.

Aus dem in den Reformerrohren R durch Dampfreformierung erzeugten wasserstoffreichen Syntheserohgas 17 wird in der Reinigungseinrichtung G durch die Abtrennung insbesondere von Wasser und Kohlendioxid ein weitgehend aus Wasserstoff und Kohlenmonoxid bestehendes Synthesegas 18 erzeugt, das im Druckwechseladsorber W in Reinwasserstoff 19 und ein vorwiegend aus Kohlenmonoxid bestehendes Restgas 20 zerlegt wird. Während das Restgas 20 im Feuerraum F des Dampfreformers D verbrannt wird, um Energie für die Reformierungsreaktion zu liefern, wird der größere Teil des Reinwasserstoffs 19 als Gasprodukt 21 abgegeben und der kleinere Teil 4 vor die Behandlungseinrichtung B in den zweiten Teilstrom 3 des Ausgangstoffs 1 zurückgeführt.From the hydrogen-rich synthesis gas 17 produced in the reformer tubes R by steam reforming, a synthesis gas 18 largely consisting of hydrogen and carbon monoxide is produced in the purification device G by the separation of water and carbon dioxide in particular, the hydrogen chloride in the pressure swing adsorber W and a residual gas consisting predominantly of carbon monoxide 20 is disassembled. While the residual gas 20 is burned in the furnace F of the steam reformer D to provide energy for the reforming reaction, the greater part of the pure hydrogen 19 than Gas product 21 delivered and the smaller part 4 returned before the treatment device B in the second partial stream 3 of the starting material 1.

Claims (10)

Verfahren zur Erzeugung eines Wasserstoff und/oder Kohlenmonoxid umfassenden Gasproduktes (21), wobei ein aus einem Kohlenwasserstoffe enthaltenden Ausgangsstoff (1) gebildeter Kohlenwasserstoffeinsatz (5) gemeinsam mit überhitztem Dampf (13) einer bei erhöhtem Druck ablaufenden Dampfreformierung (D) zugeführt wird, um ein Wasserstoff und Kohlenmonoxid enthaltendes Syntheserohgas (17) zu erhalten, aus dem das Gasprodukt (21) gewonnen wird, dadurch gekennzeichnet, dass Kesselspeisewasser (8) bei einem höheren als seinem kritischen Druck Wärme zugeführt wird (E1), um überkritisches Wasser (10) zu erhalten, von dem nachfolgend zumindest eine Teilmenge (12) als Treibmedium in einer Dampfstrahlpumpe (V) eingesetzt wird, mit deren Hilfe der Kohlenwasserstoffeinsatz (5) und/oder ein zu dessen Bildung eingesetzter Stoff verdichtet wird.Method for producing a gas product comprising hydrogen and / or carbon monoxide (21), wherein a hydrocarbon feed (5) formed from a hydrocarbon-containing starting material (1) is fed together with superheated steam (13) to a steam reforming (D) which is at elevated pressure to obtain a synthesis gas (17) containing hydrogen and carbon monoxide, from which the gas product (21) is obtained, characterized in that heat is supplied to the boiler feed water (8) at a pressure higher than its critical pressure (E1) to produce supercritical water (10). of which subsequently at least one subset (12) is used as the propellant in a steam jet pump (V), with the aid of which the hydrocarbon feed (5) and / or a substance used for its formation is compressed. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass bei der Verdichtung des Kohlenwasserstoffeinsatzes (5) in der Dampfstrahlpumpe (V) ein Stoffgemisch (14) gebildet wird, das den Anforderungen der Dampfreformierung (D) aufgrund seiner Zusammensetzung genügt und/oder das einen Druck aufweist, der eine Zuführung zur Dampfreformierung (D) ohne weitere Verdichtung erlaubt.A method according to claim 1, characterized in that in the compression of the hydrocarbon feed (5) in the steam jet pump (V), a mixture (14) is formed, which meets the requirements of steam reforming (D) due to its composition and / or having a pressure which allows a feed to the steam reforming (D) without further compression. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass das Kesselspeisewasser (8) in indirektem Wärmetausch gegen Rauchgas (9) aufgeheizt wird, dem zuvor Wärme für die Dampfreformierung (D) entzogen wird.Method according to one of claims 1 or 2, characterized in that the boiler feed water (8) is heated in indirect heat exchange against flue gas (9), which is previously withdrawn heat for the steam reforming (D). Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das bei der Verdichtung des Kohlenwasserstoffeinsatzes (5) in der Dampfstrahlpumpe (V) gebildete Stoffgemisch (14) in indirektem Wärmetausch gegen Rauchgas (15) aufgeheizt wird, dem zuvor Wärme für die Dampfreformierungsreaktion (D) entzogen wird.Method according to one of claims 1 to 3, characterized in that in the compression of the hydrocarbon insert (5) in the steam jet pump (V) formed mixture (14) is heated in indirect heat exchange against flue gas (15), the previously heat for the steam reforming reaction (D) is withdrawn. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass überkritisches Wasser (10) mit einem Druck erzeugt wird, der nicht mehr als 20bar höher ist, als der kritische Druck des Kesselspeisewassers (8).Method according to one of claims 1 to 4, characterized in that supercritical water (10) is produced at a pressure which is not more than 20 bar higher than the critical pressure of the boiler feed water (8). Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass ein nicht als Treibmittel (13) für die Dampfstrahlpumpe (V) benötigter Teil (11) des überkritischen Wassers (10) exportiert und zur Erzeugung elektrischen Stroms und/oder zu Heizzwecken und/oder zur Durchführung chemischer Reaktionen und/oder als Extraktionsmittel und/oder zur Vernichtung toxischer Stoffe verwendet wird.Method according to one of Claims 1 to 5, characterized in that a part (11) of the supercritical water (10) which is not required as propellant (13) for the steam jet pump (V) is exported and used for the production of electric current and / or for heating purposes and / or or is used to carry out chemical reactions and / or as an extraction agent and / or for the destruction of toxic substances. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass der nicht als Treibmedium für eine Dampfstrahlpumpe (V) benötigte Teil (11) des überkritischen Wassers (10) vor seinem Export gegen abzukühlendes Rauchgas weiter aufgeheizt wird.A method according to claim 6, characterized in that the not required as a driving medium for a steam jet pump (V) part (11) of the supercritical water (10) is further heated prior to its export against abzukühlendes flue gas. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass Erdgas oder verdampftes Flüssiggas oder verdampftes Naphtha als Kohlenwasserstoffe enthaltender Ausgangsstoff (1) verwendet wird.Method according to one of claims 1 to 7, characterized in that natural gas or vaporized liquid gas or vaporized naphtha is used as hydrocarbon-containing starting material (1). Vorrichtung zur Erzeugung eines Wasserstoff und/oder Kohlenmonoxid umfassenden Gasproduktes (21) aus einem Kohlenwasserstoffeinsatz (5), der aus einem Kohlenwasserstoffe enthaltenden Ausgangsstoff (1) gebildet wird, mit einem Dampfreformer (D) sowie einem System zur Prozessdampferzeugung (E1) aus Kesselspeisewasser (8), dadurch gekennzeichnet, dass das System zur Prozessdampferzeugung einen im überkritischen Bereich betreibbaren Zwangsdurchlaufkessel (E1) umfasst, dessen Überhitzer über ein Drosselorgan (a) mit einer Dampfstrahlpumpe (V) verbunden ist, so dass im Überhitzer erzeugbares überkritisches Wasser (12) als Treibmittel in der Dampfstrahlpumpe (V) zur Verdichtung des Kohlenwasserstoffeinsatzes (5) und/oder eines zu dessen Bildung eingesetzten Stoffs verwendet werden kann.Device for producing a gas product (21) comprising hydrogen and / or carbon monoxide from a hydrocarbon feed (5) formed from a hydrocarbon-containing starting material (1) with a steam reformer (D) and a process steam generation system (E1) from boiler feed water ( 8), characterized in that the system for generating process steam comprises a forced-circulation boiler (E1) which can be operated in the supercritical region and whose superheater is connected to a steam jet pump (V) via a throttling element (a), so that supercritical water (12) which can be generated in the superheater is used as Propellant can be used in the steam jet pump (V) for the compression of the hydrocarbon feed (5) and / or a substance used for its formation. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass der Zwangsdurchlaufkessel (E1) im Rauchgaskanal (A) des Dampfreformers (D) angeordnet ist.Apparatus according to claim 9, characterized in that the forced-circulation boiler (E1) in the flue gas duct (A) of the steam reformer (D) is arranged.
EP17001506.9A 2016-09-27 2017-09-07 Method and device for steam reforming Withdrawn EP3299335A1 (en)

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EP3059207A1 (en) * 2015-02-19 2016-08-24 Linde Aktiengesellschaft Method and device for generating synthetic gas

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